This screw extraction set is manufactured from the highest grade materials. Chrome-Moly construction for strength and titanium coated to resist corrosion. Damage free screw extraction that removes rusted, painted, stripped or seized screws. will extract almost all screw sizes and types, including pozi, slotted, Phillips, square, torx and hex head screws. Designed to use with a cordless drill the set comprises of a rotary impact chuck for added torque and 4 bits. Comes in a plastic moulded carry case for easy storage.